MESON Chess Problem Database

Problem Display
PID: 53262 (4QB2/4N3/2Pp4/1pN5/1Rnk4/P1Rp2P1/1P6/5K2 w - - 0 1)

Meiners, Willem Barend Hendrik

Tijdschrift vd NSB, 1893

4QB2/4N3/2Pp4/1pN5/1Rnk4/P1Rp2P1/1P6/5K2

#2

11 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Rxd3#
    • 1...Ke5
      • 2.Bg7#
    • 1...d5
      • 2.Sf5#
  • Tries
    • 1.Bg7+?
      • 1...Ke3
        • 2.Rxd3#
      • 1...Kxc5!
    • 1.Rxd3+?
      • 1...Ke5
        • 2.Bg7#
      • 1...Kxc5!
    • 1.Rbxc4+?
      • 1...Ke3
        • 2.Rxd3#
      • 1...Ke5
        • 2.Bg7#
      • 1...bxc4!
    • 1.Qd7?
      • 1...Ke3
        • 2.Rxd3#
      • 1...Kxc5
        • 2.Qa7#
      • 1...Ke5
        • 2.Bg7#
      • 1...d2
        • 2.Qxd6#
      • 1...d5!
    • 1.Qf7?
      • 1...Ke3
        • 2.Rxd3#
        • 2.Qf2#
        • 2.Qf4#
      • 1...Kxc5
        • 2.Qf2#
      • 1...Ke5
        • 2.Bg7#
        • 2.Qf4#
        • 2.Qg7#
      • 1...dxc5
        • 2.Qf4#
      • 1...d2
        • 2.Qd5#
      • 1...d5!
  • Keys
    • 1.Qb8!
      • 1...Ke3
        • 2.Rxd3#
      • 1...Kxc5
        • 2.Qa7#
      • 1...Ke5
        • 2.Bg7#
      • 1...dxc5
        • 2.Qf4#
      • 1...d5
        • 2.Sf5#
      • 1...d2
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINS(b),P_SPINP(a),S_FLIGHT::R1(D),XP(a)
    • K(c);N_SPINS(b),S_FLIGHT::B(K)
    • P(e);SBLOCK::S(I)
  • Tries
    • Try
      • B(K);CHECK
      • Vars
        • K(c);N_SPINS(b),P_SPINP(a),S_FLIGHT::R1(D),XP(a)
      • Refutation
        • K(c);S_FLIGHT,XS(G)
    • Try
      • R(D);CHECK,XP(a)
      • Vars
        • K(c);N_SPINS(b),S_FLIGHT::B(K)
      • Refutation
        • K(c);N_SPINS(b),S_FLIGHT,XS(G)
    • Try
      • R(F);CHECK,XS(b)
      • Vars
        • K(c);P_SPINP(a),S_FLIGHT::R1(D),XP(a)
        • K(c);S_FLIGHT::B(K)
      • Refutation
        • P(d);XR(F)
    • Try
      • Q(J);P_PINP(e)
      • Vars
        • K(c);N_SPINP(e),N_SPINS(b),P_SPINP(a),S_FLIGHT::R1(D),XP(a)
        • K(c);N_SPINP(e),OGATEB,S_FLIGHT,XS(G)::QAB(J)
        • K(c);N_SPINP(e),N_SPINS(b),S_FLIGHT::B(K)
        • P(a);::QAR2(J),XP(e)
      • Refutation
        • P(e);
    • Try
      • Q(J);
      • Vars
        • K(c);S_FLIGHT,XS(G)::QAB(J)
        • P(e);SBLOCK,XS(G)::QAR2(J)
        • P(a);::QAR1(J)
      • Refutation
        • P(e);
  • Actual
    • Q(J);
    • Vars
      • K(c);N_SPINS(b),P_SPINP(a),S_FLIGHT::R1(D),XP(a)
      • K(c);OGATEB,S_FLIGHT,XS(G)::QAB(J)
      • K(c);N_SPINS(b),P_SPINP(e),S_FLIGHT::B(K)
      • P(e);OGATE,SBLOCK,XS(G)::QAR2(J)
      • P(e);SBLOCK::S(I)
      • P(a);::QAR2(J),XP(e)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).